The Ashford Perimeter Center garage is a four-level, 700-car concrete parking structure with post-tensioned, flat slabs supported on concrete columns. During the garage construction, it was discovered that the post-tensioning system in the east-west direction of the slab was inadequately designed. The project team implemented a repair that consisted of adding heavily reinforced, 3 in. thick by 3 ft wide gunite beams to the underside of the slab, but some of the gunite beams delaminated. In addition, the garage exhibited leakage, slab cracking, and large deflections of cantilevered bays.